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2017-02-25 23:55:24 +01:00
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openssl-1.0.2f/crypto/threads/th-lock.c Normal file
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/* crypto/threads/th-lock.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#ifdef LINUX
# include <typedefs.h>
#endif
#ifdef OPENSSL_SYS_WIN32
# include <windows.h>
#endif
#ifdef SOLARIS
# include <synch.h>
# include <thread.h>
#endif
#ifdef IRIX
# include <ulocks.h>
# include <sys/prctl.h>
#endif
#ifdef PTHREADS
# include <pthread.h>
#endif
#include <openssl/lhash.h>
#include <openssl/crypto.h>
#include <openssl/buffer.h>
#include "../../e_os.h"
#include <openssl/x509.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
void CRYPTO_thread_setup(void);
void CRYPTO_thread_cleanup(void);
static void irix_locking_callback(int mode, int type, char *file, int line);
static void solaris_locking_callback(int mode, int type, char *file,
int line);
static void win32_locking_callback(int mode, int type, char *file, int line);
static void pthreads_locking_callback(int mode, int type, char *file,
int line);
static unsigned long irix_thread_id(void);
static unsigned long solaris_thread_id(void);
static unsigned long pthreads_thread_id(void);
/*-
* usage:
* CRYPTO_thread_setup();
* application code
* CRYPTO_thread_cleanup();
*/
#define THREAD_STACK_SIZE (16*1024)
#ifdef OPENSSL_SYS_WIN32
static HANDLE *lock_cs;
void CRYPTO_thread_setup(void)
{
int i;
lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(HANDLE));
if (!lock_cs) {
/* Nothing we can do about this...void function! */
return;
}
for (i = 0; i < CRYPTO_num_locks(); i++) {
lock_cs[i] = CreateMutex(NULL, FALSE, NULL);
}
CRYPTO_set_locking_callback((void (*)(int, int, char *, int))
win32_locking_callback);
/* id callback defined */
return (1);
}
static void CRYPTO_thread_cleanup(void)
{
int i;
CRYPTO_set_locking_callback(NULL);
for (i = 0; i < CRYPTO_num_locks(); i++)
CloseHandle(lock_cs[i]);
OPENSSL_free(lock_cs);
}
void win32_locking_callback(int mode, int type, char *file, int line)
{
if (mode & CRYPTO_LOCK) {
WaitForSingleObject(lock_cs[type], INFINITE);
} else {
ReleaseMutex(lock_cs[type]);
}
}
#endif /* OPENSSL_SYS_WIN32 */
#ifdef SOLARIS
# define USE_MUTEX
# ifdef USE_MUTEX
static mutex_t *lock_cs;
# else
static rwlock_t *lock_cs;
# endif
static long *lock_count;
void CRYPTO_thread_setup(void)
{
int i;
# ifdef USE_MUTEX
lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(mutex_t));
# else
lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(rwlock_t));
# endif
if (!lock_cs) {
/* Nothing we can do about this...void function! */
return;
}
lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
for (i = 0; i < CRYPTO_num_locks(); i++) {
lock_count[i] = 0;
# ifdef USE_MUTEX
mutex_init(&(lock_cs[i]), USYNC_THREAD, NULL);
# else
rwlock_init(&(lock_cs[i]), USYNC_THREAD, NULL);
# endif
}
CRYPTO_set_id_callback((unsigned long (*)())solaris_thread_id);
CRYPTO_set_locking_callback((void (*)())solaris_locking_callback);
}
void CRYPTO_thread_cleanup(void)
{
int i;
CRYPTO_set_locking_callback(NULL);
for (i = 0; i < CRYPTO_num_locks(); i++) {
# ifdef USE_MUTEX
mutex_destroy(&(lock_cs[i]));
# else
rwlock_destroy(&(lock_cs[i]));
# endif
}
OPENSSL_free(lock_cs);
OPENSSL_free(lock_count);
}
void solaris_locking_callback(int mode, int type, char *file, int line)
{
# if 0
fprintf(stderr, "thread=%4d mode=%s lock=%s %s:%d\n",
CRYPTO_thread_id(),
(mode & CRYPTO_LOCK) ? "l" : "u",
(type & CRYPTO_READ) ? "r" : "w", file, line);
# endif
# if 0
if (CRYPTO_LOCK_SSL_CERT == type)
fprintf(stderr, "(t,m,f,l) %ld %d %s %d\n",
CRYPTO_thread_id(), mode, file, line);
# endif
if (mode & CRYPTO_LOCK) {
# ifdef USE_MUTEX
mutex_lock(&(lock_cs[type]));
# else
if (mode & CRYPTO_READ)
rw_rdlock(&(lock_cs[type]));
else
rw_wrlock(&(lock_cs[type]));
# endif
lock_count[type]++;
} else {
# ifdef USE_MUTEX
mutex_unlock(&(lock_cs[type]));
# else
rw_unlock(&(lock_cs[type]));
# endif
}
}
unsigned long solaris_thread_id(void)
{
unsigned long ret;
ret = (unsigned long)thr_self();
return (ret);
}
#endif /* SOLARIS */
#ifdef IRIX
/* I don't think this works..... */
static usptr_t *arena;
static usema_t **lock_cs;
void CRYPTO_thread_setup(void)
{
int i;
char filename[20];
lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(usema_t *));
if (!lock_cs) {
/* Nothing we can do about this...void function! */
return;
}
strcpy(filename, "/tmp/mttest.XXXXXX");
mktemp(filename);
usconfig(CONF_STHREADIOOFF);
usconfig(CONF_STHREADMALLOCOFF);
usconfig(CONF_INITUSERS, 100);
usconfig(CONF_LOCKTYPE, US_DEBUGPLUS);
arena = usinit(filename);
unlink(filename);
for (i = 0; i < CRYPTO_num_locks(); i++) {
lock_cs[i] = usnewsema(arena, 1);
}
CRYPTO_set_id_callback((unsigned long (*)())irix_thread_id);
CRYPTO_set_locking_callback((void (*)())irix_locking_callback);
}
void CRYPTO_thread_cleanup(void)
{
int i;
CRYPTO_set_locking_callback(NULL);
for (i = 0; i < CRYPTO_num_locks(); i++) {
char buf[10];
sprintf(buf, "%2d:", i);
usdumpsema(lock_cs[i], stdout, buf);
usfreesema(lock_cs[i], arena);
}
OPENSSL_free(lock_cs);
}
void irix_locking_callback(int mode, int type, char *file, int line)
{
if (mode & CRYPTO_LOCK) {
uspsema(lock_cs[type]);
} else {
usvsema(lock_cs[type]);
}
}
unsigned long irix_thread_id(void)
{
unsigned long ret;
ret = (unsigned long)getpid();
return (ret);
}
#endif /* IRIX */
/* Linux and a few others */
#ifdef PTHREADS
static pthread_mutex_t *lock_cs;
static long *lock_count;
void CRYPTO_thread_setup(void)
{
int i;
lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
if (!lock_cs || !lock_count) {
/* Nothing we can do about this...void function! */
if (lock_cs)
OPENSSL_free(lock_cs);
if (lock_count)
OPENSSL_free(lock_count);
return;
}
for (i = 0; i < CRYPTO_num_locks(); i++) {
lock_count[i] = 0;
pthread_mutex_init(&(lock_cs[i]), NULL);
}
CRYPTO_set_id_callback((unsigned long (*)())pthreads_thread_id);
CRYPTO_set_locking_callback((void (*)())pthreads_locking_callback);
}
void thread_cleanup(void)
{
int i;
CRYPTO_set_locking_callback(NULL);
for (i = 0; i < CRYPTO_num_locks(); i++) {
pthread_mutex_destroy(&(lock_cs[i]));
}
OPENSSL_free(lock_cs);
OPENSSL_free(lock_count);
}
void pthreads_locking_callback(int mode, int type, char *file, int line)
{
# if 0
fprintf(stderr, "thread=%4d mode=%s lock=%s %s:%d\n",
CRYPTO_thread_id(),
(mode & CRYPTO_LOCK) ? "l" : "u",
(type & CRYPTO_READ) ? "r" : "w", file, line);
# endif
# if 0
if (CRYPTO_LOCK_SSL_CERT == type)
fprintf(stderr, "(t,m,f,l) %ld %d %s %d\n",
CRYPTO_thread_id(), mode, file, line);
# endif
if (mode & CRYPTO_LOCK) {
pthread_mutex_lock(&(lock_cs[type]));
lock_count[type]++;
} else {
pthread_mutex_unlock(&(lock_cs[type]));
}
}
unsigned long pthreads_thread_id(void)
{
unsigned long ret;
ret = (unsigned long)pthread_self();
return (ret);
}
#endif /* PTHREADS */